"Allows you to measure the brake pad wear two different ways accurately and consistently without guessing","Color coded brake gauge identifies thickness levels for brake lining inspection","Gauges are designed to check both vertically and horizontally and are color coded to match SAE or Metric recommendations",".3150 to .4720\" (Green); .1575 to .2382\" (Yellow); .0787 to .1181\" (Red); 8mm, 10mm, 12mm (Green); 4mm, 5mm, 6mm (Yellow) 9 PIECE BRAKE LINING GAUGE BPG9 | Matco Tools